کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1662701 | 1517708 | 2006 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Residual stress determination in thermally sprayed coatings-a comparison of curvature models and X-ray techniques
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
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چکیده انگلیسی
Residual stresses were calculated from the curvature of coating-substrate coupons using three different models: a simple two-beam elastic model, the Tsui-Clyne progressive deposition model, and the Tsui-Clyne progressive deposition model with substrate plasticity. The coatings studied were metallic and prepared by high-velocity oxy-fuel (HVOF) thermal spraying. The calculated stresses were compared to those measured on the same coupons using X-ray diffraction (XRD) techniques. Coating surface stresses calculated using the two-beam elastic model disagreed with those measured using XRD for coupons with significant curvature. Trends in residual stresses (with varying coating and substrate thickness, substrate material, and HVOF spray particle velocity) predicted by the elastic and elastic-plastic versions of the Tsui-Clyne progressive deposition model agreed with the trends measured by XRD. The magnitudes of stresses calculated using the Tsui-Clyne model agreed with the XRD measurements for coatings sprayed at low particle velocities but were significantly more compressive for coatings sprayed at higher velocities. Accounting for substrate plasticity in the Tsui-Clyne model improved the agreement with the XRD results, but only slightly.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 200, Issues 12â13, 31 March 2006, Pages 3955-3962
Journal: Surface and Coatings Technology - Volume 200, Issues 12â13, 31 March 2006, Pages 3955-3962
نویسندگان
T.C. Totemeier, J.K. Wright,